a9b896ef2417011f0fd106442c3d3be2ab2684413f73b32ed2b58682190cfda7

General

Target

a9b896ef2417011f0fd106442c3d3be2ab2684413f73b32ed2b58682190cfda7.exe
Size

272KB
MD5

093007066e4e611d6c5e75ad4b1e77f3
SHA1

d31fee5289f5061f998db31eff1b3faef4be5363
SHA256

a9b896ef2417011f0fd106442c3d3be2ab2684413f73b32ed2b58682190cfda7
SHA512

d5a152f75b0001caea3ea5eeff9b79c082d3b5b1067aa1742e359a8f3d939176ae4c53239f179c2653d7f2951c8fc5ddc9cb53dc5794f9abf9b4d7d302cba893
SSDEEP

6144:oFSiBL1Y1NEYMRkjYLvFtSxOTdgW5FTl3XN+u/YerMoRJahpcM:oFSiBL1Y1NEYMR3vDSxOqW5FxzRJazcM

Score

10^/10

evasion persistence spyware stealer

Malware Config

Signatures

Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1158

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	a9b896ef2417011f0fd106442c3d3be2ab2684413f73b32ed2b58682190cfda7.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	faoosom.exe

Executes dropped EXE 1 IoCs

pid	Process
2788	faoosom.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	a9b896ef2417011f0fd106442c3d3be2ab2684413f73b32ed2b58682190cfda7.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows\CurrentVersion\Run\	a9b896ef2417011f0fd106442c3d3be2ab2684413f73b32ed2b58682190cfda7.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\faoosom = "C:\\Users\\Admin\\faoosom.exe /k"	a9b896ef2417011f0fd106442c3d3be2ab2684413f73b32ed2b58682190cfda7.exe
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows\CurrentVersion\Run\	faoosom.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\faoosom = "C:\\Users\\Admin\\faoosom.exe /v"	faoosom.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4812	4540	WerFault.exe	80

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4540	a9b896ef2417011f0fd106442c3d3be2ab2684413f73b32ed2b58682190cfda7.exe
4540	a9b896ef2417011f0fd106442c3d3be2ab2684413f73b32ed2b58682190cfda7.exe
2788	faoosom.exe
2788	faoosom.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4540	a9b896ef2417011f0fd106442c3d3be2ab2684413f73b32ed2b58682190cfda7.exe
2788	faoosom.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4540 wrote to memory of 2788	4540	a9b896ef2417011f0fd106442c3d3be2ab2684413f73b32ed2b58682190cfda7.exe	81
PID 4540 wrote to memory of 2788	4540	a9b896ef2417011f0fd106442c3d3be2ab2684413f73b32ed2b58682190cfda7.exe	81
PID 4540 wrote to memory of 2788	4540	a9b896ef2417011f0fd106442c3d3be2ab2684413f73b32ed2b58682190cfda7.exe	81

C:\Users\Admin\AppData\Local\Temp\a9b896ef2417011f0fd106442c3d3be2ab2684413f73b32ed2b58682190cfda7.exe
"C:\Users\Admin\AppData\Local\Temp\a9b896ef2417011f0fd106442c3d3be2ab2684413f73b32ed2b58682190cfda7.exe"
1⤵
- Modifies visiblity of hidden/system files in Explorer
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4540
- C:\Users\Admin\faoosom.exe
  "C:\Users\Admin\faoosom.exe"
  2⤵
  - Modifies visiblity of hidden/system files in Explorer
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  PID:2788
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4540 -s 1532
  2⤵
  - Program crash
  PID:4812

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 376 -p 4540 -ip 4540
1⤵
PID:4328

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Hidden Files and Directories

1

T1158

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Hidden Files and Directories

Modify Registry

Credential Access

Credentials in Files

1

T1081

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\faoosom.exe

Filesize
272KB

MD5
093007066e4e611d6c5e75ad4b1e77f3

SHA1
d31fee5289f5061f998db31eff1b3faef4be5363

SHA256
a9b896ef2417011f0fd106442c3d3be2ab2684413f73b32ed2b58682190cfda7

SHA512
d5a152f75b0001caea3ea5eeff9b79c082d3b5b1067aa1742e359a8f3d939176ae4c53239f179c2653d7f2951c8fc5ddc9cb53dc5794f9abf9b4d7d302cba893

Download Submit
C:\Users\Admin\faoosom.exe

Filesize
272KB

MD5
093007066e4e611d6c5e75ad4b1e77f3

SHA1
d31fee5289f5061f998db31eff1b3faef4be5363

SHA256
a9b896ef2417011f0fd106442c3d3be2ab2684413f73b32ed2b58682190cfda7

SHA512
d5a152f75b0001caea3ea5eeff9b79c082d3b5b1067aa1742e359a8f3d939176ae4c53239f179c2653d7f2951c8fc5ddc9cb53dc5794f9abf9b4d7d302cba893

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads